关键词: 吸虱, 体表寄生虫, 大绒鼠

Abstract: Objective To investigate the basic information of sucking lice on the body surface of Eothenomys miletus (a dominant species of wild rats in Yunnan), including the louse species constitution and distribution, the dominant species of louse and their spatial pattern, the sex ratio and the community structure, etc. Methods E.miletus (the host of lice) was captured alive with a mouse trap in 17 counties (or towns) of Yunnan. All the lice on the body surface of the hosts were completely collected. Richness(S), diversity index(H′), evenness(J′) and dominance index(C′) were used to illustrate the community structure of sucking lice on the hosts according to Shannon-Wiener's method. Disperse coefficient(C), Cassie index(C_A), clumping index(I) and patch index(m/m) were adopted to measure the spatial distribution pattern of sucking lice. Results 1169 individuals of E.miletus were captured only in five counties (towns). Only six species of sucking lice (3528 individuals) were collected from the body surface of 1169 rats hosts (E.miletus). Both the richness and diversity index of sucking louse were very low. Hoplopleura edentula was the dominant species with 99.46% of relative dominance(D_r). The dominant louse species, H.edentula, showed an aggregation spatial distribution among the different individuals of the rat host. Male and female adults of H.edentula accounted for 81.62% of the whole development stages. The sex ratio of female/male in the dominant louse species was 1.53. Conclusion The sucking louse variety on E.miletus is very singularity and its community structure is also very simple. The distribution of H.edentula, a dominant louse species on E.miletus, is an aggregation pattern with more female adults.